Hoop-planing machine



(No Model.)

A. F. WARD.

HOOP PLANING MACHINE.

N0. 332,124. Patented Deo. 8, 1885.

UNrrn STATES ArtNr @Erica ALEXANDER F. WARD, OF DETROIT, MICHIGAN.

HOOP-PLANING MACHINE.

SPECIFICATION forming part of Letters Patent No. 332,124, dated December 8, 1885,

Application tiled April 15, 1885. Serial No. 162,300.

To all whom it may concern,.-

Beit known that I, ALEXANDER F. VARD, of Detroit, in the county of Wayne and State of Michigan, have invented new and useful Improvements in Hoop-Plauing Machines; and I do hereby declare that the following is a full. clear, and exact description thereof, reference being hadto the accompanying drawings, which form a part of this specification.

This invention relates to a new and useful improvement in hoop-planing machines; and the invention consists in the novel construction and arrangement of a self adjusting pressure-foot, and in an improved construction of the bed, all as hereinafter described.

Figure lis a diagram plan ot' a hoop-plan ing machine with the pressure-feet removed, but shown in dotted lines. Fig. 2 is a vertical central section on line xx in Fig. l. Fig. 3 is a cross-section on line y y, Fig. 2. Fig. 4: is a detailed perspective ot' one of the pressurefeet with its self-adjusting toe removed and shown in dotted lines. Fig. 5 is a diagram showing the self-adjusting toe of the pressurefoot in end View and bearing upon a hoop..

In the accompanying drawings, which form a part of this specilication, my invention is illustrated on a hoopplaning machine of the usual style, and arranged to plane two hoops at a time.

A A are the planer-heads. B B are the upper feed-rolls. C C are the lower feed-rolls. D is the front end of the bed, through which the hoops are fed, and which is provided with the usual guides for two hoops. E is that part of the bed between the feed-rolls. F are the pressure feet, pivotally secured to the standards G, and arranged to press the hoops by their weight onto the bed E immediately i'n front of the planer-heads.

The parts to which the improvements refer are constructed as follows: H is a toe, provided with a round shank, c, which fits loosely into a socket, b, in the forward end of the pressurefoot. c is a threaded portion on the end of the shank, by means of which the toe is secured to the pressure-foot by a nut, d. e is a pin on the base of the toe, and fis a notch cut in the end of the pressurefoot. The face of the toe is slightly concave in cross-section. In practice the toe is only loosely secured to the pressure-foot, which (No model.)

allows it to roll in its socket to the necessar] degree, as the notch f is cut longer than thl pin e, which latter engages into the notch As it is the toe of the pressure-foot whicl touches the hoop and bears down upon it, i will be seen that the loose toe adjusts itsel to the top side of the hoop and bears upoi both edges no matter whether the hoop has th proper bevel or not. Heretofore this toe Wa formed as an integral part ofthe pressure-foot and when, as it frequently happened, a hoop blank has not the proper bevel the pressure foot only bore on the edge of the hoop, am the probability was that the hoop touchel he bed only on one edge, instead of bein,` pressed down tightly and flatly onto it, as i necessary to form a perfect hoop. It mus be considered in connection with this matte that the upper feed-rolls are conical, so as t t a hoop of proper bevel, and as soon as, hoop of different bevel or no bevel at alli fed it will be compressed ou one edge, am this compression always results in giving th hoop a slight twist, which, if not counter acted by the pressure-foot, lift-s one edge c the hoop off the bed, and the planer heai will form an imperfect hoop of it.

A further improvement ot' the machin consists` in the peculiar construction of th bed E. This is provided, as shown in Fig. f: with flanges g, by means of which and suit able bolts it is removably and adjustabl` secured to the under side of the frame, s that it can be adjusted or removed withou disturbing or removing any other part t the machine. This bed is provided on it top face with undercut recesses h, filled Wit Rabbit-metal firmly hammered in and face off, so as to form a level bearing. Experienc has shown that such abearing lasts longe .than even steel, and is easily renewed agai when worn out.

What I claim as my invention is- A pressure-foot provided with a self-a(I just-ing toe and means, such as the recess in the presser-foot and pin e on the toe, fc preventing accidental displacement, substal tially as described.

ALEXANDER F. WARD.

Witnesses:

H. S. SPRAGUE, E. J. SOULLY., 

